I fulltime and am 13'3 tall. Been traveling for 3 years now. If you are tall and travel all the time, driving all over the country, you have an entirely different attitude then those who make weekend trips and maybe one longer summer vacation - and are a foot shorter. I would be foolish indeed not to use all my resources when planning my weekly trips between CG/park/resorts and going down roads I have never been on.
You can say 'rare' if you want to as I don't keep track. But consider your situation if you come upon an unmarked bridge that you can't get under and you have no way to turn around. Or worse, if you just blindly try to fit under it. Those are situations that are 'not for me'.